Volume 99, Issue 12
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Features
Improved Rails by the Dry-Blast System
Future Speed of Cruisers
Doubtful Cases of Radioactivity
Progress in the Gas-Driven Ship Problem
More Powerful Express Locomotives
The Making of Aeroplane History
A Few Facts about Fakes
The Current Supplement
The Morehouse Comet Observed
Reconstruction of the Baltimore & Ohio Bridge Over the Susquehanna River
The Collins System of Long-Distance Wireless Telephony
Public Service Car Fender and Wheel Guard Tests
IV.--The French Navy of To-Day
The “Flip-Flap”
By the English Correspondent of the Scientific American
Shaft Sinking by the Freezing Process
By Our English Correspondent.
Protecting Trains Under the East River
An Improved Pipe Wrench
Patent Department
Shore Anchor